Why does the light coming from a flashlight appear brighter when it is closer to an object than when it is farther away?

a. It is because the air is absorbing less of the light.

b. It is because the air is absorbing more of the light.

c. It is because the light waves are being refracted.

d. It is because the light waves are appearing at their normal line.

Consider the following system at equilibrium. caco3(s) ca2+(aq) + co32–(aq) the addition of which compound will cause a shift in equilibrium because of a common ion effect? ccl4 co2 cuso4 na2co3

Which statement best describes the oxidation numbers of the atoms found in magnesium chloride? a. magnesium has a 2- oxidation number and chlorine has a 1+ oxidation number. b. magnesium has a 2- oxidation number and chlorine has a 2+ oxidation number. c. magnesium has a 2+ oxidation number and chlorine has a 1- oxidation number. d. magnesium has a 1+ oxidation number and chlorine has a 1- oxidation number.

What is the mass of 2.00 l of an intravenous glucose solution with a density of 1.15 g/ml?